Yes. It's open and fairly easy to reach in with a finger and switch on or off. Also the power button works well with this case unlike some others. Same with volume buttons. It is not completely open at the bottom which is also nice. The cut outs for the headphone jack and the power cord are just a tad bigger so the cords fit in properly. Very nice case.

Specifically, is the bottom of the case like the 5/5S Apple Leather Cases or does it have a larger access opening to the lightening port? I use an adapter to plug in my phone to my car audio and the 5S case opening does not allow for Apple's Lightening Adapter. Thanks.

I have This same case for my 64GB iPhone SE & it really doesn't add that much weight or bulk to be honest. It's an perfect & amazing case.
I've now got 2 x colours now for different occasions. Black & Midnight Blue, It's goes pretty well with my Space Grey iPhone SE.

There are few ways cleaning it. Because it's leather made. The appreance may change when you use it. Just like car leather seats & leather sofas.

The best way to keep it looking fresh & clean & like new again. Either:

* is to use fresh wet wipes, then wipe it off & dry with clean Microfibre cloth or Towel

* 1 tiny drop of water, then wipe it off with Microfibre cloth or Towel

* or use can tiny pea-sized amount of leather cleaning stuff & then wiping it off with an clean Microfibre cloth or Towel (Please try & test on the corner of the case & see if there's isn't any problems) but be use it with care & not too much. Just an tiny bit, then wipe it off. On light coloured leather cases only. Dark ones you won't see any changes.

* normally I use one of those KFC handy fresh wet wipes, give an small clean, then dry it off with an clean tissue & looks fresh, clean & new again

Black & Dark coloured eat her cases are easily to maintain & easy to keep them clean. It's just the lights ones shows more dirt. Hope this helps guys.